CMMG Dissent MK4 Pistol | .300 AAC Blackout | 6.5in | 30A0E33TNG

The CMMG DISSENT MK4 is a compact, buffer-less AR pistol chambered in .300 AAC Blackout that emphasizes portability and modularity through CMMG’s patent-pending Compact Action. It pairs a 6.5-inch free-floated barrel with a 5.5-inch M-LOK handguard, a forward non-reciprocating side charger that can be swapped for left- or right-handed operation, and an SLR adjustable gas block for tuning between supersonic and subsonic loads. Controls are AR-style and ambidextrous features are provided where applicable, making the DISSENT practical for compact carry and general-purpose range work.

For an optic under $1,000 that complements the DISSENT’s short barrel and close-to-medium engagement focus, consider a low-power variable such as the Vortex Crossfire II 1-4×24 or a compact 1x red dot like the Vortex Sparc AR. Either option retains a low profile on the DISSENT’s Picatinny footprint and supports quick target acquisition in short-range scenarios.

Suggested uses: compact vehicle or truck carry and precision-oriented short-range practice at the range.

Product Specifications

• The manufacturer is CMMG.
• The model is DISSENT MK4.
• The caliber is .300 AAC Blackout.
• The barrel measures 6.5 inches.
• The muzzle device is a CMMG ZEROED Linear Compensator and the muzzle thread is 5/8 x 24.
• The operating system is a Compact Action – Direct Impingement.
• The trigger is a TriggerTech AR-D 2-Stage configured for a light, repeatable break.
• The handguard is a 5.5-inch proprietary M-LOK design.
• The gas system uses an SLR Adjustable .750 gas block for load tuning.
• The magazine capacity is 30 rounds.
• The package includes 2 Magpul 30rd PMAGs.
• The optic footprint is PICATINNY.
• The weight is listed as 4.8 lbs.
• The overall length is 14.7 inches.
• The UPC is 810097508101.

The DISSENT MK4 condenses AR ergonomics into a highly portable package while retaining features aimed at real-world use: adjustable gas for ammunition flexibility, an optimized TriggerTech two-stage for predictable breaks, and ambidextrous controls for operator versatility. Its compact profile makes it a strong choice for users who need a stowable AR-format pistol for vehicle carry or short-range precision practice.

Owners commonly praise the DISSENT’s compact portability and the TriggerTech AR-D’s light, repeatable break.

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